Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEventController.cpp @ 12888:4a2acfb16e97
8025657: compiler/intrinsics/mathexact/ConstantTest.java fails on assert in lcm.cpp on solaris x64
Reviewed-by: kvn, twisti
author | rbackman |
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date | Fri, 11 Oct 2013 12:06:14 +0200 |
parents | 6b19fe41b577 |
children | de6a9e811145 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "jvmtifiles/jvmtiEnv.hpp" | |
28 #include "memory/resourceArea.hpp" | |
29 #include "prims/jvmtiEventController.hpp" | |
30 #include "prims/jvmtiEventController.inline.hpp" | |
31 #include "prims/jvmtiExport.hpp" | |
32 #include "prims/jvmtiImpl.hpp" | |
33 #include "prims/jvmtiThreadState.inline.hpp" | |
34 #include "runtime/frame.hpp" | |
35 #include "runtime/thread.hpp" | |
36 #include "runtime/vframe.hpp" | |
37 #include "runtime/vframe_hp.hpp" | |
38 #include "runtime/vmThread.hpp" | |
39 #include "runtime/vm_operations.hpp" | |
0 | 40 |
41 #ifdef JVMTI_TRACE | |
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42 #define EC_TRACE(out) do { \ |
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43 if (JvmtiTrace::trace_event_controller()) { \ |
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44 SafeResourceMark rm; \ |
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45 tty->print_cr out; \ |
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46 } \ |
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47 } while (0) |
0 | 48 #else |
49 #define EC_TRACE(out) | |
50 #endif /*JVMTI_TRACE */ | |
51 | |
52 // bits for standard events | |
53 | |
54 static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
55 static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
56 static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
57 static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL)); | |
58 static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
59 static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL)); | |
60 static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
61 static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL)); | |
62 static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL)); | |
63 static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
64 static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
65 static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
66 static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
67 static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
68 static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
69 static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL)); | |
70 static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
71 static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
72 static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL)); | |
73 static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
74 static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
75 static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
76 static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
77 static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL)); | |
78 static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
79 static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
80 static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
81 static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
82 static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
83 static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
84 static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL)); | |
85 | |
86 // bits for extension events | |
87 static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
88 | |
89 | |
90 static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT | | |
91 MONITOR_WAIT_BIT | MONITOR_WAITED_BIT; | |
92 static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT; | |
93 static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT | | |
94 FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT; | |
95 static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS | | |
96 BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT; | |
97 static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT; | |
98 static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | | |
99 VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT | | |
100 THREAD_START_BIT | THREAD_END_BIT | | |
101 DYNAMIC_CODE_GENERATED_BIT; | |
102 static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS; | |
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103 static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT; |
0 | 104 |
105 /////////////////////////////////////////////////////////////// | |
106 // | |
107 // JvmtiEventEnabled | |
108 // | |
109 | |
110 JvmtiEventEnabled::JvmtiEventEnabled() { | |
111 clear(); | |
112 } | |
113 | |
114 | |
115 void JvmtiEventEnabled::clear() { | |
116 _enabled_bits = 0; | |
117 #ifndef PRODUCT | |
118 _init_guard = JEE_INIT_GUARD; | |
119 #endif | |
120 } | |
121 | |
122 void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) { | |
123 jlong bits = get_bits(); | |
124 jlong mask = bit_for(event_type); | |
125 if (enabled) { | |
126 bits |= mask; | |
127 } else { | |
128 bits &= ~mask; | |
129 } | |
130 set_bits(bits); | |
131 } | |
132 | |
133 | |
134 /////////////////////////////////////////////////////////////// | |
135 // | |
136 // JvmtiEnvThreadEventEnable | |
137 // | |
138 | |
139 JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() { | |
140 _event_user_enabled.clear(); | |
141 _event_enabled.clear(); | |
142 } | |
143 | |
144 | |
145 JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() { | |
146 _event_user_enabled.clear(); | |
147 _event_enabled.clear(); | |
148 } | |
149 | |
150 | |
151 /////////////////////////////////////////////////////////////// | |
152 // | |
153 // JvmtiThreadEventEnable | |
154 // | |
155 | |
156 JvmtiThreadEventEnable::JvmtiThreadEventEnable() { | |
157 _event_enabled.clear(); | |
158 } | |
159 | |
160 | |
161 JvmtiThreadEventEnable::~JvmtiThreadEventEnable() { | |
162 _event_enabled.clear(); | |
163 } | |
164 | |
165 | |
166 /////////////////////////////////////////////////////////////// | |
167 // | |
168 // JvmtiEnvEventEnable | |
169 // | |
170 | |
171 JvmtiEnvEventEnable::JvmtiEnvEventEnable() { | |
172 _event_user_enabled.clear(); | |
173 _event_callback_enabled.clear(); | |
174 _event_enabled.clear(); | |
175 } | |
176 | |
177 | |
178 JvmtiEnvEventEnable::~JvmtiEnvEventEnable() { | |
179 _event_user_enabled.clear(); | |
180 _event_callback_enabled.clear(); | |
181 _event_enabled.clear(); | |
182 } | |
183 | |
184 | |
185 /////////////////////////////////////////////////////////////// | |
186 // | |
187 // VM_EnterInterpOnlyMode | |
188 // | |
189 | |
190 class VM_EnterInterpOnlyMode : public VM_Operation { | |
191 private: | |
192 JvmtiThreadState *_state; | |
193 | |
194 public: | |
195 VM_EnterInterpOnlyMode(JvmtiThreadState *state); | |
196 | |
197 bool allow_nested_vm_operations() const { return true; } | |
198 VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; } | |
199 void doit(); | |
200 | |
201 // to do: this same function is in jvmtiImpl - should be in one place | |
202 bool can_be_deoptimized(vframe* vf) { | |
203 return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized()); | |
204 } | |
205 }; | |
206 | |
207 VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state) | |
208 : _state(state) | |
209 { | |
210 } | |
211 | |
212 | |
213 void VM_EnterInterpOnlyMode::doit() { | |
214 // Set up the current stack depth for later tracking | |
215 _state->invalidate_cur_stack_depth(); | |
216 | |
217 _state->enter_interp_only_mode(); | |
218 | |
219 JavaThread *thread = _state->get_thread(); | |
220 if (thread->has_last_Java_frame()) { | |
221 // If running in fullspeed mode, single stepping is implemented | |
222 // as follows: first, the interpreter does not dispatch to | |
223 // compiled code for threads that have single stepping enabled; | |
224 // second, we deoptimize all methods on the thread's stack when | |
225 // interpreted-only mode is enabled the first time for a given | |
226 // thread (nothing to do if no Java frames yet). | |
227 int num_marked = 0; | |
228 ResourceMark resMark; | |
229 RegisterMap rm(thread, false); | |
230 for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) { | |
231 if (can_be_deoptimized(vf)) { | |
232 ((compiledVFrame*) vf)->code()->mark_for_deoptimization(); | |
233 ++num_marked; | |
234 } | |
235 } | |
236 if (num_marked > 0) { | |
237 VM_Deoptimize op; | |
238 VMThread::execute(&op); | |
239 } | |
240 } | |
241 } | |
242 | |
243 | |
244 /////////////////////////////////////////////////////////////// | |
245 // | |
246 // VM_ChangeSingleStep | |
247 // | |
248 | |
249 class VM_ChangeSingleStep : public VM_Operation { | |
250 private: | |
251 bool _on; | |
252 | |
253 public: | |
254 VM_ChangeSingleStep(bool on); | |
255 VMOp_Type type() const { return VMOp_ChangeSingleStep; } | |
256 bool allow_nested_vm_operations() const { return true; } | |
257 void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping | |
258 }; | |
259 | |
260 | |
261 VM_ChangeSingleStep::VM_ChangeSingleStep(bool on) | |
262 : _on(on != 0) | |
263 { | |
264 } | |
265 | |
266 | |
267 | |
268 | |
269 /////////////////////////////////////////////////////////////// | |
270 // | |
271 // JvmtiEventControllerPrivate | |
272 // | |
273 // Private internal implementation methods for JvmtiEventController. | |
274 // | |
275 // These methods are thread safe either because they are called | |
276 // in early VM initialization which is single threaded, or they | |
277 // hold the JvmtiThreadState_lock. | |
278 // | |
279 | |
280 class JvmtiEventControllerPrivate : public AllStatic { | |
281 static bool _initialized; | |
282 public: | |
283 static void set_should_post_single_step(bool on); | |
284 static void enter_interp_only_mode(JvmtiThreadState *state); | |
285 static void leave_interp_only_mode(JvmtiThreadState *state); | |
286 static void recompute_enabled(); | |
287 static jlong recompute_env_enabled(JvmtiEnvBase* env); | |
288 static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state); | |
289 static jlong recompute_thread_enabled(JvmtiThreadState *state); | |
290 static void event_init(); | |
291 | |
292 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
293 jvmtiEvent event_type, bool enabled); | |
294 static void set_event_callbacks(JvmtiEnvBase *env, | |
295 const jvmtiEventCallbacks* callbacks, | |
296 jint size_of_callbacks); | |
297 | |
298 static void set_extension_event_callback(JvmtiEnvBase *env, | |
299 jint extension_event_index, | |
300 jvmtiExtensionEvent callback); | |
301 | |
302 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
303 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
304 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
305 static void change_field_watch(jvmtiEvent event_type, bool added); | |
306 | |
307 static void thread_started(JavaThread *thread); | |
308 static void thread_ended(JavaThread *thread); | |
309 | |
310 static void env_initialize(JvmtiEnvBase *env); | |
311 static void env_dispose(JvmtiEnvBase *env); | |
312 | |
313 static void vm_start(); | |
314 static void vm_init(); | |
315 static void vm_death(); | |
316 | |
317 static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed); | |
318 static void trace_changed(jlong now_enabled, jlong changed); | |
319 }; | |
320 | |
321 bool JvmtiEventControllerPrivate::_initialized = false; | |
322 | |
323 void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) { | |
324 // we have permission to do this, VM op doesn't | |
325 JvmtiExport::set_should_post_single_step(on); | |
326 } | |
327 | |
328 | |
329 // This change must always be occur when at a safepoint. | |
330 // Being at a safepoint causes the interpreter to use the | |
331 // safepoint dispatch table which we overload to find single | |
332 // step points. Just to be sure that it has been set, we | |
333 // call notice_safepoints when turning on single stepping. | |
334 // When we leave our current safepoint, should_post_single_step | |
335 // will be checked by the interpreter, and the table kept | |
336 // or changed accordingly. | |
337 void VM_ChangeSingleStep::doit() { | |
338 JvmtiEventControllerPrivate::set_should_post_single_step(_on); | |
339 if (_on) { | |
340 Interpreter::notice_safepoints(); | |
341 } | |
342 } | |
343 | |
344 | |
345 void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) { | |
346 EC_TRACE(("JVMTI [%s] # Entering interpreter only mode", | |
347 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
348 | |
349 VM_EnterInterpOnlyMode op(state); | |
350 VMThread::execute(&op); | |
351 } | |
352 | |
353 | |
354 void | |
355 JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) { | |
356 EC_TRACE(("JVMTI [%s] # Leaving interpreter only mode", | |
357 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
358 state->leave_interp_only_mode(); | |
359 } | |
360 | |
361 | |
362 void | |
363 JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) { | |
364 #ifdef JVMTI_TRACE | |
365 if (JvmtiTrace::trace_event_controller()) { | |
366 SafeResourceMark rm; | |
367 // traces standard events only | |
368 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
369 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
370 if (changed & bit) { | |
371 // it changed, print it | |
372 tty->print_cr("JVMTI [%s] # %s event %s", | |
373 JvmtiTrace::safe_get_thread_name(state->get_thread()), | |
374 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
375 } | |
376 } | |
377 } | |
378 #endif /*JVMTI_TRACE */ | |
379 } | |
380 | |
381 | |
382 void | |
383 JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) { | |
384 #ifdef JVMTI_TRACE | |
385 if (JvmtiTrace::trace_event_controller()) { | |
386 SafeResourceMark rm; | |
387 // traces standard events only | |
388 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
389 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
390 if (changed & bit) { | |
391 // it changed, print it | |
392 tty->print_cr("JVMTI [-] # %s event %s", | |
393 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
394 } | |
395 } | |
396 } | |
397 #endif /*JVMTI_TRACE */ | |
398 } | |
399 | |
400 | |
401 // For the specified env: compute the currently truly enabled events | |
402 // set external state accordingly. | |
403 // Return value and set value must include all events. | |
404 // But outside this class, only non-thread-filtered events can be queried.. | |
405 jlong | |
406 JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) { | |
407 jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits(); | |
408 jlong now_enabled = | |
409 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
410 env->env_event_enable()->_event_user_enabled.get_bits(); | |
411 | |
412 switch (JvmtiEnv::get_phase()) { | |
413 case JVMTI_PHASE_PRIMORDIAL: | |
414 case JVMTI_PHASE_ONLOAD: | |
415 // only these events allowed in primordial or onload phase | |
416 now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS); | |
417 break; | |
418 case JVMTI_PHASE_START: | |
419 // only these events allowed in start phase | |
420 now_enabled &= EARLY_EVENT_BITS; | |
421 break; | |
422 case JVMTI_PHASE_LIVE: | |
423 // all events allowed during live phase | |
424 break; | |
425 case JVMTI_PHASE_DEAD: | |
426 // no events allowed when dead | |
427 now_enabled = 0; | |
428 break; | |
429 default: | |
430 assert(false, "no other phases - sanity check"); | |
431 break; | |
432 } | |
433 | |
434 // will we really send these events to this env | |
435 env->env_event_enable()->_event_enabled.set_bits(now_enabled); | |
436 | |
437 trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS); | |
438 | |
439 return now_enabled; | |
440 } | |
441 | |
442 | |
443 // For the specified env and thread: compute the currently truly enabled events | |
444 // set external state accordingly. Only thread-filtered events are included. | |
445 jlong | |
446 JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) { | |
447 JvmtiEnv *env = ets->get_env(); | |
448 | |
449 jlong was_enabled = ets->event_enable()->_event_enabled.get_bits(); | |
450 jlong now_enabled = THREAD_FILTERED_EVENT_BITS & | |
451 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
452 (env->env_event_enable()->_event_user_enabled.get_bits() | | |
453 ets->event_enable()->_event_user_enabled.get_bits()); | |
454 | |
455 // for frame pops and field watchs, computed enabled state | |
456 // is only true if an event has been requested | |
457 if (!ets->has_frame_pops()) { | |
458 now_enabled &= ~FRAME_POP_BIT; | |
459 } | |
460 if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) { | |
461 now_enabled &= ~FIELD_ACCESS_BIT; | |
462 } | |
463 if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) { | |
464 now_enabled &= ~FIELD_MODIFICATION_BIT; | |
465 } | |
466 | |
467 switch (JvmtiEnv::get_phase()) { | |
468 case JVMTI_PHASE_DEAD: | |
469 // no events allowed when dead | |
470 now_enabled = 0; | |
471 break; | |
472 } | |
473 | |
474 // if anything changed do update | |
475 if (now_enabled != was_enabled) { | |
476 | |
477 // will we really send these events to this thread x env | |
478 ets->event_enable()->_event_enabled.set_bits(now_enabled); | |
479 | |
480 // If the enabled status of the single step or breakpoint events changed, | |
481 // the location status may need to change as well. | |
482 jlong changed = now_enabled ^ was_enabled; | |
483 if (changed & SINGLE_STEP_BIT) { | |
484 ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0); | |
485 } | |
486 if (changed & BREAKPOINT_BIT) { | |
487 ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0); | |
488 } | |
489 trace_changed(state, now_enabled, changed); | |
490 } | |
491 return now_enabled; | |
492 } | |
493 | |
494 | |
495 // For the specified thread: compute the currently truly enabled events | |
496 // set external state accordingly. Only thread-filtered events are included. | |
497 jlong | |
498 JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) { | |
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499 if (state == NULL) { |
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500 // associated JavaThread is exiting |
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501 return (jlong)0; |
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502 } |
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503 |
0 | 504 jlong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits(); |
505 jlong any_env_enabled = 0; | |
506 | |
507 { | |
508 // This iteration will include JvmtiEnvThreadStates whoses environments | |
509 // have been disposed. These JvmtiEnvThreadStates must not be filtered | |
510 // as recompute must be called on them to disable their events, | |
511 JvmtiEnvThreadStateIterator it(state); | |
512 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
513 any_env_enabled |= recompute_env_thread_enabled(ets, state); | |
514 } | |
515 } | |
516 | |
517 if (any_env_enabled != was_any_env_enabled) { | |
518 // mark if event is truly enabled on this thread in any environment | |
519 state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled); | |
520 | |
521 // compute interp_only mode | |
522 bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0; | |
523 bool is_now_interp = state->is_interp_only_mode(); | |
524 | |
525 if (should_be_interp != is_now_interp) { | |
526 if (should_be_interp) { | |
527 enter_interp_only_mode(state); | |
528 } else { | |
529 leave_interp_only_mode(state); | |
530 } | |
531 } | |
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532 |
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533 // update the JavaThread cached value for thread-specific should_post_on_exceptions value |
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534 bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0; |
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535 state->set_should_post_on_exceptions(should_post_on_exceptions); |
0 | 536 } |
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537 |
0 | 538 return any_env_enabled; |
539 } | |
540 | |
541 | |
542 // Compute truly enabled events - meaning if the event can and could be | |
543 // sent. An event is truly enabled if it is user enabled on the thread | |
544 // or globally user enabled, but only if there is a callback or event hook | |
545 // for it and, for field watch and frame pop, one has been set. | |
546 // Compute if truly enabled, per thread, per environment, per combination | |
547 // (thread x environment), and overall. These merges are true if any is true. | |
548 // True per thread if some environment has callback set and the event is globally | |
549 // enabled or enabled for this thread. | |
550 // True per environment if the callback is set and the event is globally | |
551 // enabled in this environment or enabled for any thread in this environment. | |
552 // True per combination if the environment has the callback set and the | |
553 // event is globally enabled in this environment or the event is enabled | |
554 // for this thread and environment. | |
555 // | |
556 // All states transitions dependent on these transitions are also handled here. | |
557 void | |
558 JvmtiEventControllerPrivate::recompute_enabled() { | |
559 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
560 | |
561 // event enabled for any thread in any environment | |
562 jlong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits(); | |
563 jlong any_env_thread_enabled = 0; | |
564 | |
565 EC_TRACE(("JVMTI [-] # recompute enabled - before %llx", was_any_env_thread_enabled)); | |
566 | |
567 // compute non-thread-filters events. | |
568 // This must be done separately from thread-filtered events, since some | |
569 // events can occur before any threads exist. | |
570 JvmtiEnvIterator it; | |
571 for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) { | |
572 any_env_thread_enabled |= recompute_env_enabled(env); | |
573 } | |
574 | |
575 // We need to create any missing jvmti_thread_state if there are globally set thread | |
576 // filtered events and there weren't last time | |
577 if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 && | |
578 (was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) { | |
579 assert(JvmtiEnv::is_vm_live() || (JvmtiEnv::get_phase()==JVMTI_PHASE_START), | |
580 "thread filtered events should not be enabled when VM not in start or live phase"); | |
581 { | |
582 MutexLocker mu(Threads_lock); //hold the Threads_lock for the iteration | |
583 for (JavaThread *tp = Threads::first(); tp != NULL; tp = tp->next()) { | |
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584 // state_for_while_locked() makes tp->is_exiting() check |
0 | 585 JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing |
586 } | |
587 }// release Threads_lock | |
588 } | |
589 | |
590 // compute and set thread-filtered events | |
591 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
592 any_env_thread_enabled |= recompute_thread_enabled(state); | |
593 } | |
594 | |
595 // set universal state (across all envs and threads) | |
596 jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled; | |
597 if (delta != 0) { | |
598 JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0); | |
599 JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0); | |
600 JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0); | |
601 JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0); | |
602 JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0); | |
603 JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0); | |
604 JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0); | |
605 JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0); | |
606 JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0); | |
607 JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0); | |
608 JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0); | |
609 JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0); | |
610 JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0); | |
611 JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0); | |
612 JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0); | |
613 JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0); | |
614 JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0); | |
615 JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0); | |
616 JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0); | |
617 JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0); | |
618 | |
619 // need this if we want thread events or we need them to init data | |
620 JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0); | |
621 | |
622 // If single stepping is turned on or off, execute the VM op to change it. | |
623 if (delta & SINGLE_STEP_BIT) { | |
624 switch (JvmtiEnv::get_phase()) { | |
625 case JVMTI_PHASE_DEAD: | |
626 // If the VM is dying we can't execute VM ops | |
627 break; | |
628 case JVMTI_PHASE_LIVE: { | |
629 VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0); | |
630 VMThread::execute(&op); | |
631 break; | |
632 } | |
633 default: | |
634 assert(false, "should never come here before live phase"); | |
635 break; | |
636 } | |
637 } | |
638 | |
639 // set global truly enabled, that is, any thread in any environment | |
640 JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled); | |
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641 |
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642 // set global should_post_on_exceptions |
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643 JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0); |
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644 |
0 | 645 } |
646 | |
647 EC_TRACE(("JVMTI [-] # recompute enabled - after %llx", any_env_thread_enabled)); | |
648 } | |
649 | |
650 | |
651 void | |
652 JvmtiEventControllerPrivate::thread_started(JavaThread *thread) { | |
653 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
654 assert(thread == Thread::current(), "must be current thread"); | |
655 assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist"); | |
656 | |
657 EC_TRACE(("JVMTI [%s] # thread started", JvmtiTrace::safe_get_thread_name(thread))); | |
658 | |
659 // if we have any thread filtered events globally enabled, create/update the thread state | |
660 if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) { | |
661 MutexLocker mu(JvmtiThreadState_lock); | |
662 // create the thread state if missing | |
663 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
664 if (state != NULL) { // skip threads with no JVMTI thread state | |
665 recompute_thread_enabled(state); | |
666 } | |
667 } | |
668 } | |
669 | |
670 | |
671 void | |
672 JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) { | |
673 // Removes the JvmtiThreadState associated with the specified thread. | |
674 // May be called after all environments have been disposed. | |
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675 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
0 | 676 |
677 EC_TRACE(("JVMTI [%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread))); | |
678 | |
679 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
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680 assert(state != NULL, "else why are we here?"); |
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681 delete state; |
0 | 682 } |
683 | |
684 void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env, | |
685 const jvmtiEventCallbacks* callbacks, | |
686 jint size_of_callbacks) { | |
687 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
688 EC_TRACE(("JVMTI [*] # set event callbacks")); | |
689 | |
690 env->set_event_callbacks(callbacks, size_of_callbacks); | |
691 jlong enabled_bits = 0; | |
692 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
693 jvmtiEvent evt_t = (jvmtiEvent)ei; | |
694 if (env->has_callback(evt_t)) { | |
695 enabled_bits |= JvmtiEventEnabled::bit_for(evt_t); | |
696 } | |
697 } | |
698 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
699 recompute_enabled(); | |
700 } | |
701 | |
702 void | |
703 JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env, | |
704 jint extension_event_index, | |
705 jvmtiExtensionEvent callback) | |
706 { | |
707 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
708 EC_TRACE(("JVMTI [*] # set extension event callback")); | |
709 | |
710 // extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL | |
711 assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL && | |
712 extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check"); | |
713 | |
714 | |
715 // As the bits for both standard (jvmtiEvent) and extension | |
716 // (jvmtiExtEvents) are stored in the same word we cast here to | |
717 // jvmtiEvent to set/clear the bit for this extension event. | |
718 jvmtiEvent event_type = (jvmtiEvent)extension_event_index; | |
719 | |
720 // Prevent a possible race condition where events are re-enabled by a call to | |
721 // set event callbacks, where the DisposeEnvironment occurs after the boiler-plate | |
722 // environment check and before the lock is acquired. | |
723 // We can safely do the is_valid check now, as JvmtiThreadState_lock is held. | |
724 bool enabling = (callback != NULL) && (env->is_valid()); | |
725 env->env_event_enable()->set_user_enabled(event_type, enabling); | |
726 | |
727 // update the callback | |
728 jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks(); | |
729 switch (extension_event_index) { | |
730 case EXT_EVENT_CLASS_UNLOAD : | |
731 ext_callbacks->ClassUnload = callback; | |
732 break; | |
733 default: | |
734 ShouldNotReachHere(); | |
735 } | |
736 | |
737 // update the callback enable/disable bit | |
738 jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits(); | |
739 jlong bit_for = JvmtiEventEnabled::bit_for(event_type); | |
740 if (enabling) { | |
741 enabled_bits |= bit_for; | |
742 } else { | |
743 enabled_bits &= ~bit_for; | |
744 } | |
745 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
746 | |
747 recompute_enabled(); | |
748 } | |
749 | |
750 | |
751 void | |
752 JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) { | |
753 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
754 EC_TRACE(("JVMTI [*] # env initialize")); | |
755 | |
756 if (JvmtiEnvBase::is_vm_live()) { | |
757 // if we didn't initialize event info already (this is a late | |
758 // launched environment), do it now. | |
759 event_init(); | |
760 } | |
761 | |
762 env->initialize(); | |
763 | |
764 // add the JvmtiEnvThreadState to each JvmtiThreadState | |
765 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
766 state->add_env(env); | |
767 assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check"); | |
768 } | |
769 JvmtiEventControllerPrivate::recompute_enabled(); | |
770 } | |
771 | |
772 | |
773 void | |
774 JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) { | |
775 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
776 EC_TRACE(("JVMTI [*] # env dispose")); | |
777 | |
778 // Before the environment is marked disposed, disable all events on this | |
779 // environment (by zapping the callbacks). As a result, the disposed | |
780 // environment will not call event handlers. | |
781 set_event_callbacks(env, NULL, 0); | |
782 for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL; | |
783 extension_event_index <= EXT_MAX_EVENT_TYPE_VAL; | |
784 ++extension_event_index) { | |
785 set_extension_event_callback(env, extension_event_index, NULL); | |
786 } | |
787 | |
788 // Let the environment finish disposing itself. | |
789 env->env_dispose(); | |
790 } | |
791 | |
792 | |
793 void | |
794 JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
795 jvmtiEvent event_type, bool enabled) { | |
796 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
797 | |
798 EC_TRACE(("JVMTI [%s] # user %s event %s", | |
799 thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread), | |
800 enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type))); | |
801 | |
802 if (thread == NULL) { | |
803 env->env_event_enable()->set_user_enabled(event_type, enabled); | |
804 } else { | |
805 // create the thread state (if it didn't exist before) | |
806 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
807 if (state != NULL) { | |
808 state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled); | |
809 } | |
810 } | |
811 recompute_enabled(); | |
812 } | |
813 | |
814 | |
815 void | |
816 JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
817 EC_TRACE(("JVMTI [%s] # set frame pop - frame=%d", | |
818 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
819 fpop.frame_number() )); | |
820 | |
821 ets->get_frame_pops()->set(fpop); | |
822 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
823 } | |
824 | |
825 | |
826 void | |
827 JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
828 EC_TRACE(("JVMTI [%s] # clear frame pop - frame=%d", | |
829 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
830 fpop.frame_number() )); | |
831 | |
832 ets->get_frame_pops()->clear(fpop); | |
833 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
834 } | |
835 | |
836 | |
837 void | |
838 JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
839 int cleared_cnt = ets->get_frame_pops()->clear_to(fpop); | |
840 | |
841 EC_TRACE(("JVMTI [%s] # clear to frame pop - frame=%d, count=%d", | |
842 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
843 fpop.frame_number(), | |
844 cleared_cnt )); | |
845 | |
846 if (cleared_cnt > 0) { | |
847 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
848 } | |
849 } | |
850 | |
851 void | |
852 JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) { | |
853 int *count_addr; | |
854 | |
855 switch (event_type) { | |
856 case JVMTI_EVENT_FIELD_MODIFICATION: | |
857 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
858 break; | |
859 case JVMTI_EVENT_FIELD_ACCESS: | |
860 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
861 break; | |
862 default: | |
863 assert(false, "incorrect event"); | |
864 return; | |
865 } | |
866 | |
867 EC_TRACE(("JVMTI [-] # change field watch - %s %s count=%d", | |
868 event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access", | |
869 added? "add" : "remove", | |
870 *count_addr)); | |
871 | |
872 if (added) { | |
873 (*count_addr)++; | |
874 if (*count_addr == 1) { | |
875 recompute_enabled(); | |
876 } | |
877 } else { | |
878 if (*count_addr > 0) { | |
879 (*count_addr)--; | |
880 if (*count_addr == 0) { | |
881 recompute_enabled(); | |
882 } | |
883 } else { | |
884 assert(false, "field watch out of phase"); | |
885 } | |
886 } | |
887 } | |
888 | |
889 void | |
890 JvmtiEventControllerPrivate::event_init() { | |
891 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); | |
892 | |
893 if (_initialized) { | |
894 return; | |
895 } | |
896 | |
897 EC_TRACE(("JVMTI [-] # VM live")); | |
898 | |
899 #ifdef ASSERT | |
900 // check that our idea and the spec's idea of threaded events match | |
901 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
902 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
903 assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei), | |
904 "thread filtered event list does not match"); | |
905 } | |
906 #endif | |
907 | |
908 _initialized = true; | |
909 } | |
910 | |
911 void | |
912 JvmtiEventControllerPrivate::vm_start() { | |
913 // some events are now able to be enabled (phase has changed) | |
914 JvmtiEventControllerPrivate::recompute_enabled(); | |
915 } | |
916 | |
917 | |
918 void | |
919 JvmtiEventControllerPrivate::vm_init() { | |
920 event_init(); | |
921 | |
922 // all the events are now able to be enabled (phase has changed) | |
923 JvmtiEventControllerPrivate::recompute_enabled(); | |
924 } | |
925 | |
926 | |
927 void | |
928 JvmtiEventControllerPrivate::vm_death() { | |
929 // events are disabled (phase has changed) | |
930 JvmtiEventControllerPrivate::recompute_enabled(); | |
931 } | |
932 | |
933 | |
934 /////////////////////////////////////////////////////////////// | |
935 // | |
936 // JvmtiEventController | |
937 // | |
938 | |
939 JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled; | |
940 | |
941 bool | |
942 JvmtiEventController::is_global_event(jvmtiEvent event_type) { | |
943 assert(is_valid_event_type(event_type), "invalid event type"); | |
944 jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL); | |
945 return((bit_for & GLOBAL_EVENT_BITS)!=0); | |
946 } | |
947 | |
948 void | |
949 JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) { | |
950 if (Threads::number_of_threads() == 0) { | |
951 // during early VM start-up locks don't exist, but we are safely single threaded, | |
952 // call the functionality without holding the JvmtiThreadState_lock. | |
953 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
954 } else { | |
955 MutexLocker mu(JvmtiThreadState_lock); | |
956 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
957 } | |
958 } | |
959 | |
960 | |
961 void | |
962 JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env, | |
963 const jvmtiEventCallbacks* callbacks, | |
964 jint size_of_callbacks) { | |
965 if (Threads::number_of_threads() == 0) { | |
966 // during early VM start-up locks don't exist, but we are safely single threaded, | |
967 // call the functionality without holding the JvmtiThreadState_lock. | |
968 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
969 } else { | |
970 MutexLocker mu(JvmtiThreadState_lock); | |
971 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
972 } | |
973 } | |
974 | |
975 void | |
976 JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env, | |
977 jint extension_event_index, | |
978 jvmtiExtensionEvent callback) { | |
979 if (Threads::number_of_threads() == 0) { | |
980 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
981 } else { | |
982 MutexLocker mu(JvmtiThreadState_lock); | |
983 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
984 } | |
985 } | |
986 | |
987 | |
988 | |
989 | |
990 void | |
991 JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
992 MutexLocker mu(JvmtiThreadState_lock); | |
993 JvmtiEventControllerPrivate::set_frame_pop(ets, fpop); | |
994 } | |
995 | |
996 | |
997 void | |
998 JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
999 MutexLocker mu(JvmtiThreadState_lock); | |
1000 JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop); | |
1001 } | |
1002 | |
1003 | |
1004 void | |
1005 JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
1006 MutexLocker mu(JvmtiThreadState_lock); | |
1007 JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop); | |
1008 } | |
1009 | |
1010 void | |
1011 JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) { | |
1012 MutexLocker mu(JvmtiThreadState_lock); | |
1013 JvmtiEventControllerPrivate::change_field_watch(event_type, added); | |
1014 } | |
1015 | |
1016 void | |
1017 JvmtiEventController::thread_started(JavaThread *thread) { | |
1018 // operates only on the current thread | |
1019 // JvmtiThreadState_lock grabbed only if needed. | |
1020 JvmtiEventControllerPrivate::thread_started(thread); | |
1021 } | |
1022 | |
1023 void | |
1024 JvmtiEventController::thread_ended(JavaThread *thread) { | |
1025 // operates only on the current thread | |
1026 // JvmtiThreadState_lock grabbed only if needed. | |
1027 JvmtiEventControllerPrivate::thread_ended(thread); | |
1028 } | |
1029 | |
1030 void | |
1031 JvmtiEventController::env_initialize(JvmtiEnvBase *env) { | |
1032 if (Threads::number_of_threads() == 0) { | |
1033 // during early VM start-up locks don't exist, but we are safely single threaded, | |
1034 // call the functionality without holding the JvmtiThreadState_lock. | |
1035 JvmtiEventControllerPrivate::env_initialize(env); | |
1036 } else { | |
1037 MutexLocker mu(JvmtiThreadState_lock); | |
1038 JvmtiEventControllerPrivate::env_initialize(env); | |
1039 } | |
1040 } | |
1041 | |
1042 void | |
1043 JvmtiEventController::env_dispose(JvmtiEnvBase *env) { | |
1044 if (Threads::number_of_threads() == 0) { | |
1045 // during early VM start-up locks don't exist, but we are safely single threaded, | |
1046 // call the functionality without holding the JvmtiThreadState_lock. | |
1047 JvmtiEventControllerPrivate::env_dispose(env); | |
1048 } else { | |
1049 MutexLocker mu(JvmtiThreadState_lock); | |
1050 JvmtiEventControllerPrivate::env_dispose(env); | |
1051 } | |
1052 } | |
1053 | |
1054 | |
1055 void | |
1056 JvmtiEventController::vm_start() { | |
1057 if (JvmtiEnvBase::environments_might_exist()) { | |
1058 MutexLocker mu(JvmtiThreadState_lock); | |
1059 JvmtiEventControllerPrivate::vm_start(); | |
1060 } | |
1061 } | |
1062 | |
1063 void | |
1064 JvmtiEventController::vm_init() { | |
1065 if (JvmtiEnvBase::environments_might_exist()) { | |
1066 MutexLocker mu(JvmtiThreadState_lock); | |
1067 JvmtiEventControllerPrivate::vm_init(); | |
1068 } | |
1069 } | |
1070 | |
1071 void | |
1072 JvmtiEventController::vm_death() { | |
1073 if (JvmtiEnvBase::environments_might_exist()) { | |
1074 MutexLocker mu(JvmtiThreadState_lock); | |
1075 JvmtiEventControllerPrivate::vm_death(); | |
1076 } | |
1077 } |